Description
Craft is a content management system (CMS). In versions 4.5.0-RC1 through 4.16.18 and 5.0.0-RC1 through 5.8.22, the SSRF validation in Craft CMS’s GraphQL Asset mutation uses `gethostbyname()`, which only resolves IPv4 addresses. When a hostname has only AAAA (IPv6) records, the function returns the hostname string itself, causing the blocklist comparison to always fail and completely bypassing SSRF protection. This is a bypass of the security fix for CVE-2025-68437. Exploitation requires GraphQL schema permissions for editing assets in the `<VolumeName>` volume and creating assets in the `<VolumeName>` volume. These permissions may be granted to authenticated users with appropriate GraphQL schema access and/or Public Schema (if misconfigured with write permissions). Versions 4.16.19 and 5.8.23 patch the issue.
INFO
Published Date :
2026-02-24T02:45:45.494Z
Last Modified :
2026-02-28T02:17:18.957Z
Source :
GitHub_M
AFFECTED PRODUCTS
The following products are affected by CVE-2026-27129 vulnerability.
| Vendors | Products |
|---|---|
| Craftcms |
|
REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2026-27129.
